Thomas Carballo, host of radio show "Mojo in The Morning," reportedly offended Bieber by asking if he was worried that Harry Styles of music group's "One Direction" would take a liking to the "Believe" singer's mother.

"Do you worry about Harry around your mum, since he likes older women," Carballo asked.

Bieber didn't seem too pleased with the line of questioning, telling the radio host to mind the matters of his own mother.

"I think you should worry about your mom, bro," Bieber told the DJ.

However the radio host responded to the singer by revealing that he did not have a mother.

Bieber's "Believe" album, which was released last month, is reportedly the biggest debut of the year after moving a reported 374,000 copies in its first week according to Nielsen SoundScan. The chart topping singer is working on promoting the album while gearing up to perform at The Teen Choice Awards which will air live on Fox July 22.